Pollution Research Paper

Vol.29, Issue 3, 2010; Page No.(391-395)

CONTROL OF POLLUTANTS FROM COPPER COATED SPARK IGNITION ENGINE WITH GASOHOL

M.V.S. MURALI KRISHNA, K.KISHOR, A.V.S.S.K.S. GUPTA, S. NARASIMHA KUMAR AND D.N. REDDY

Abstract

Carbon mono oxide (CO) and un-burnt hydrocarbons (UHC) are major pollutants emitted from spark ignition engine, which are hazardous and cause health problems to human beings and hence control of these pollutants call for immediate attention. Experiments are carried out for controlling these pollutants from a variable- compression ratio, copper coated spark ignition engine (copper of thickness 300 microns is coated over piston crown and inside portion of the cylinder head) run with gasohol (20% ethanol and 80% gasoline by volume) fitted with catalytic converter containing manganese ore as catalyst. The influence of catalytic converter parameters such as void ratio, amount of air injected into the catalytic converter, temperature of injected air on these emissions at different speeds and compression ratios of the engine is studied. Air injection has drastically reduced the pollutants, which is further pronounced with the rise of temperature of injected air. Copper coated spark ignition engine with ethanol-blended gasoline reduced the exhaust emissions considerably when compared to conventional engine with pure gasoline operation.

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